Chemistry Questions and Answers July 26, 2020

1.) In a 1 M solution of NH3(aq), identify therelative molar amounts of these species. Arrange them from most toleast. 1.) NH3 2.) H3O+ 3.) H2O 4.) NH4+ ~~ OH-

A 0.140 M solution of a monoprotic acid has a percent dissociation of 1.60%. Determine the acid ionization constant (Ka) for the acid.

A 0.140 M solution of a monoprotic acid has a percent dissociation of 1.60.

1) Compute the equilibrium constant for the spontaneous reactionbetween Cd2+( a q ) and Zn( s ). Express your answer using two significant figures. 2) A Cu/Cu2+ concentration cell has a voltage of 0.21V at 25 ?C.The concentration of Cu2+ in one of the half-cells is1.6

1. What is the average value of the rate constantcalculated from the three data sets? Express the rate constant in the provided units to threesignificant figures. 2. What is the rate of disappearance ofNO when [NO]=0.0910 and [O2]=0.0244? Express the rate in molarity per second to three significantfigures. 3. What is the rate of disappearanceof O2

2NO(g) O2(g) 2NO2 (g) For the above reaction, the following data were collected for the rate of disappearance of NO in the reaction Experiment NO (M)0 (M) 1 2 3 0.0126 0.0252 0.0252 0.0125 0.0250 0.0125 Initial Rate (Ms) 1.41 102 1.13 101 5.64 10 You may want to reference (Pages 576 581) Section 14.3 while completing this problem.

1. a. Mg(s) MgCl(aq) AgNO3(aq) CaCl(aq) AgCl(s) CH(g) O(g) CO(g) HO(g) NaO(s) HO) KCIO,(s) Al(s) HCl(aq) g. CHO(g) O(g) h. b. C. d. e. f. i. j. k. Classify the following reactions according to combination (CA), decomposition (D), combustion (CU), single replacement (SR) or double replacement (DR) and then balance the equations. reaction

A manufacture firm estimates that annual profits will increase if a mobile model is built and taken to trade shows to market their product line. A finance and engineering team has looked at the issue and has developed two options: A large model at a cost of $105,000, and it should increase annual profits by $31,000. A small model for $55,000, but

A. What is the daughter nucleus produced when 83 Sr undergoesposiron emission? B. What is the daughter nucleus produced when 63 Zn undergoeselectron capture?

1. The compound below is treated with chlorine in the presence of light. Draw the structure for the organic radical species produced by reaction of the compound with a chlorine atom. Assume reaction occurs at the weakest C-H bond. You do not have to consider stereochemistry. You do not have to explicitly draw H atoms. 2. The compound below is

H3C H3C CH3 CHCH3

0.400 mole of sucrose, C12H22O11, contains C C C 12 6.02 x 1023 4.80 5.02 1022 2.89 1024 C atoms. Calculate the number of moles of aluminum, sulfur, and oxygen atoms in 7.00 moles of aluminum sulfate, Al2(SO4)3. Express the number of moles of Al, S, and O atoms numerically, separated by commas. Calculate the number of moles of magnesium,

1. Calculate the pH of a0.20 M solution of KCN at25.0 ?C. Express the pH numerically using two decimal places. ph= 2. Calculate the pH of a0.20 M solution of NH4Br at25.0 ?C. Express the pH numerically using two decimal places. ph=

1. The C-NMR spectrum of triphenylmethanol shows three peaks inthe 120 - 165 ppm range and one peak at 82.3 ppm, however theunusally tall peak at 127.9 ppm is a very rare case of twooverlapped peaks that are so exactly overlapped they are seen asone. Draw the structure of triphenylmethanol showing which C's areequivalent and which are inequivalent

Normalized Intensity 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.35 0.2 0.1 0 CARBON01 200 180 160 145.82 140 127.92 127.26 Chemical Shift (ppm) 77.33 77.01 76.69 80 8 60 40 20

1-Draw the product of the complete hydrogenation of ethyne. 2-Draw the product of the hydration of 2-butene. 3-Draw the molecule resulting from the addition of HBr topropene.

For alkenes and alkynes, the most characteristic reaction is the addition of atoms or groups of atoms to the carbon atoms of the double or triple bond. The additions occur because double bonds or triple bonds are easily broken, which provides electrons for new single bonds. There are several types of addition reactions, defined by the type of

1). The figure that follows contains ball-and-stick drawings of three possible shapes of an A F 4 molecule. For each shape, how many nonbonding electron domains are there on atom A ? Express your answers as integers. Enter your answers in the given order ((i), (ii), (iii)) separated by commas. 2.) This figure shows ball-and-stick drawings of three

() (i)

please do 35-43thank you

A. Hydrochloric Acid Solutions 1. Original concentration HCl 0.1M 3. Volume HCl used in dilution 5.00 mL B. Acetic Acid Solutions 5. Original conc. CH3COH 7. Volume CH3CO2H used C. Buffer Solutions 9. Mass of CH3CO2Na used 11. Volume of CH3CO2H used 8.5 13. Total volume of buffer solution 16. Beaker A 17. Beaker B 18. Beaker C 19. Beaker D 0.1

1) Choose the situation below that would result in a Hsolutionnear 0. A) When |Hsolvent| >> |Hsolute| B) When|Hsolute| > |Hhydration| C) When |Hsolute| < |Hhydration| D) When |Hsolute| is close to |Hhydration| E)There isn't enough information to determine. 2) Which of the following statements is FALSE? A) The half lifeof a zero order

1) Express the equilibrium constant for the following reaction. P 4 O 10 (s) ? P 4 (s) + 5 O 2 (g) a) K = [O 2 ] -5 b) K = [O 2 ] 5 c) K = d) K = 2) For the reaction of carbon with carbon dioxide to make carbon monoxide, the reaction is as follows. Write the equilibrium constant expression for the K c . C( s ) + CO 2 ( g ) ? 2CO( g ) a) K c = b) K

P4015 P4010

A. The activation energy of a certain reaction is 36.8 kJ/mol at28 degrees Celsius the rate constant is 0.0190s^-1 at what temperature in degrees Celsius would this reaction go twice as fast? B. Given that the initial rate constant is 0.0190s^-1 at aninitial temperature of 28 degrees celsius what would the rateconstant be at a temperature of 150

1) Draw the product formed when the structure shown below undergoes solvolysis in CH 3 OH. 'Solvolysis' means: an SN1 reaction where the solvent is the nucleophile. On paper, draw the initial carbocation and label the alpha AND beta carbons! 2) Draw the product formed when the structure shown below undergoes solvolysis in CH 3 OH.

Draw the product formed when the structure shown below undergoes solvolysis in CH3OH. Solvolysis means an SN1 reaction where the solvent is the nucleophile. On paper, draw the initial carbocation and label the alpha AND beta carbons Interactive 3D display mode a CI CH3

a.)Balance the chemical reaction equationP4(s)+Cl2(g)PCl5(g) Enter the coefficients in order, separated by commas(e.g., 1,2,3). b.)How many moles of PCl5 can be produced from29.0 g of P4 (and excess Cl2)? Express your answer to three significant figures and include theappropriate units. c.)How many moles of PCl5 can be produced from51.0 g of Cl2

Draw the Kekule structure for a) Acetone b) 2-methyl-3-hexane c) 3,3-dietheyltetradecanal d) cyclopentanone

Choose the structure of UDP- N -acetylglucosamine. Choose the structure of - N -acetylglucosamine.

Z00 CHC NH CHOH OH NH2 POCH2 HN OH OH N

1,1dimethylcyclobutane 1,1,3,3,5,5hexamethylcyclohexane H (a) Which of these structures has the most angle strain 1,1dimethylcyclobutane 1,1,3,3,5,5hexamethylcyclohexane staggered butane (b) Which of these structures has the most steric strain 1,1dimethylcyclobutane staggered butane 1,1,3,3,5,5hexamethylcyclohexane staggered butane (c) Which of

1) The equilibrium constant is given for one of the reactionsbelow. Determine the value of the missing equilibriumconstant. H 2 (g) + Br 2 (g) ? 2 HBr (g) K c = 3.8 10 4 4 HBr (g) ? 2 H 2 (g) + 2 Br 2 (g) K c = ? a) 1.9 10 4 b) 5.1 10 -3 c) 6.9 10 -10 d) 1.6 10 3 2) The equilibrium constant is given for one of the reactionsbelow. Determine

Credit cards are great in moderation. To help boost your FICO score, always pay your credit card balance (all of it) on time. Avoid late fees and penalties Also keep your credit card charges to onefourth of your credit limit. For example, a credit card balance of 1,000 will be onefourth of your limit of 4,000 and will incur a monthly payment of

CE 1) FeCl3 2) HO ,1) Draw an electronpushing mechanism for the formation of the propionylium cation resulting from the reaction of propionyl chloride and FeCl3. Show all lone pairs, formal charges, and appropriate arrows. 2) Two resonance structures of the propionylium cation are typically drawn in textbooks or on websites. For each resonance

1. What is the correct classification of each of the following reaction HCCH OH OH 1. LIAIH 2. HO LOCH 8 H

1. Choose the reaction that represents the combustion of C6H1202. A) C6H12O2(1) 8 O2(g) 6 CO2(g) 6 H2O(g) B) Mg(s) C6H12O2(1) MgC6H12O2(aq) C) 6 C(s) 6 H2(g) O2(g) C6H12O2(1) D) C6H12O2(1) 6 C(s) 6 H2(g) O2(g) E) None of the above represent the combustion of C6H1202 2. Determine the molarity of a solution formed by dissolving 97.7 g LiBr

. Determine the electron geometry (eg), molecular geometry (mg),and polarity of PCl3. eg=tetrahedral, mg=trigonal pyramidal, polar eg=tetrahedral, mg=bent, polar eg=linear, mg=linear, nonpolar eg=trigonal planar, mg=trigonalplanar, nonpolar eg=trigonal pyramidal,mg=trigonal pyramidal, polar

1) Which of the following statements about carbon is FALSE A) Carbon must always have four bonds. B) Carbon can bond to itself. C) Carbon can have either a tetrahedral, trigonal planar or linear geometry. D) Carbon can form into linear, branched and cyclic compounds. E) none of the above 2) What is the molecular geometry of the underlined carbon

A. Predict whether, to any significant extent, Fe(s) will reduceZn2+(aq). B. Predict whether, to any significant extent, H2O2(aq) willoxidize Cl - (aq) to Cl2(g) in acidic solution.

1. Arrange the following crystalline solids in order ofdecreasing melting point. Rank the solids from highest to lowest melting point. To rankitems as equivalent, overlap them. KCl(s), Xe(s), H2O(S) Arrange from the lowest to the highestpoint 2. Which of the following physical changes are exothermic(release energy)? melting evaporation freezing

The BeerLambert law is a linear relationship for Select one a impure compounds in inert solvents O b. pure compounds in reactive solvents O c. impure compounds in reactive solvents d. pure compounds in inert solvents

If 0.0490 g of AgIO3 dissolves per liter of solution, calculate the solubility-product constant. Using the appropriate Ksp value from Appendix D in the textbook, calculate the pH of a saturated solution of Ca(OH)2.

1) Diisobutylaluminum hydride (DIBALH) can be used to carry outwhich of the following conversions? (A)ester to aldehyde (B)carboxylic acid toester (C) 2' alcohol to Ketone (D)aldehydeto carboxylic acid (E) ester to a Ketone

What is the role of fluorescein and rhodamine B in Experiment 9, Review Constants Periodic Table Choose when quenching occurs in a chemiluminescence reaction. Quenching occurs when an excited molecules relazes by loosing energy as heat or transferring energy to another molecule. Submit Quenching occurs when you down a Gatoraid after a run.

1. Examine the IR spectra below and classify the compound (Alcohol Aldehyde Amine Ketone Carboxylic acid) circle the diagnostic peaks, and propose a structure. 4 points 4000 4000 3563.8 3405.5 3500 3500 2937.7 3000 3000 092 2500 C6H12O 2500 2000 C6H100 2000 1805.8S 1636.52 1465.8 1500 LES 1500 1370.7 SED 1221. 1911E 107271645 1118.6 1000 1017.8

Calculate the frequency of the green light emitted by a hydrogen atom with a wavelength of 486.1 nm. a. b. C. d. e. 1. 2. 1.46 x 1041 6.86 x 1014 s 4.33 x 10141 6.17 x 104 S1 1.62 x 104 s 1 Which of the following statements is TRUE

1. What effect will NO3- ions have on the pH of a solution? a.Ions will not affect the pH. b.Ions will decrease the pH. c.Ions will increase the pH. 2. What effect will CO3^2- ions have? a.Ions will not affect the pH. b.Ions will increase the pH. c.Ions will decrease the pH.

1) Determine where to dispose of each type of waste. broken flask Choose...Box lined with puncture resistant bag or Solid wastecontainer or Sharps container or Nalgene bottle with cap syringe tips Choose...Box lined with puncture resistant bag or Solid wastecontainer or Sharps container or Nalgene bottle with cap unused solid reagent Choose...Box

1. Draw a detailed, stepwise mechanism for the transesterification reaction that forms the biodiesel product in this reaction. You may use a generic representation of the triglyceride as shown in Figure 1. 2. What is the generic structure of a soap Explain how soap forms in this reaction. If anhydrous methanol is used, how is water getting into

1) Which of the following substances is not a solution A) steel B) humid air C) oxygen D) beer E) brass

1. Draw a structural formula for ammonium3,3-dimethylcyclobutanecarboxylate . You do not have to consider stereochemistry. Include cationic counter-ions, e.g., Na + in youranswer, but draw them in their own sketcher. Separate structures with + signs from the dropdown menu. 2. Draw a structural formulafor 2-bromo-3-methylbutanoic acid . You do not

1. What is the conjugate base for HNO A. HNO3 B. HNO ABCD C. NO D. NO2 2. Which of the following is a conjugate acidbase pair A. HCIOCI HSO4SO42 B. C. NH, NH3 D. H0OH 3. Given the following acids and K, values HOAC 1.76 x 105 Which acid is the strongest A. HOC B. HCN C. HF D. All are equally strong B. 11.7 M C. 5 x 10 M D. 4 x 101 M E. 2 x 102 M

1. a. With what compound will NH 3 experience onlyion-dipole intermolecular forces? C 3 H 7 OH SiH 4 CH 3 Cl HOF NaCl b. Which one of the following exhibits dipole-dipole attractionbetween molecules? Which one of the following exhibits dipole-dipole attractionbetween molecules? N 2 SbF 5 XeF 4 NH 3 C 9 H 20 c. Which one of the following

1. a. Calculate the rate constant at the higher temperature used in Experiment 4. b. Calculate the activtion energy for the reaction. c. What do your results demotrate about the effect of a catalyst on the rate of reaction.

12 Fall 2013 3. The volumes of the solutions used in Experiment 4 will be the same as those used in Experiment 1. 5. Pipet the required volumes of the Nal, NaCl, NaSO3, starch, and KSO, solutions into test tube These volumes can be found in Table 2. 4. Place this test tube in the water bath. 6. Place about 5 mL of the KSOx solution in the clean,

A. Identify the Lewis acid in the following reaction: Pt2+(aq)+4NH3(aq)Pt(NH3)42+(aq) B. Classify each of the following as a Lewis acid or a Lewis base.

CH3NH MgO Lewis acids CO Mn CN F SnC14 Lewis bases reset help

1. Draw the addition products formed when one equivalent of HBr reacts with 2,4-hexadiene. (Draw a single product for each.) 2. Draw the addition product formed when one equivalent of HCl reacts with the following diene.

H3C CH3 HBr 1 equivalent 1, 2 product addition 1, 4 product addition

1. The formula for the conjugate acid of 2 is 2. The formula for the conjugate base of HPO is

1. Add curved arrows to both structures to show the delocalization of electron pairs needed to form the other resonance contributor. 2a.) Draw the predominant resonance contributor for the following compound; include lone pairs of electrons, formal charges, and hydrogen atoms. b) Add curved arrows to both structures to show the delocalization of

0 0 0 0 0

A. Predict the organic product formed when BzCl reacts withisopropyl alcohol. B. Predict the organic product formed when BzCl reacts withwater. C. Predict the organic product formed when BzCl reacts withisopropyl alcohol. D. Predict the organic product formed when BzCl reacts withaniline. E. Predict the organic product formed when BzCl reacts

A.-How many moles of PCl5 can be produced from20.0 gof P4 (and excess Cl2)? B.-How many moles of PCl5 can be produced from59.0 gof Cl2 (and excess P4)? Consider a situation in which112 g of P4 are exposed to112 g of O2. C.-What is the maximum amount in moles of P2O5 thatcan theoretically be made from 112 g of P4 andexcess oxygen? D.-What is the

1. calculate the number of moles in 17.8 g of the antacid magnesium hydroxide , Mg (OH)2. 2. Write the net ionic equation for the following reaction. Aqueous iron iii sulfate is added to aqueous sodium sulfide to produce solid iron iii sulfide and aqueous sodium sulfate.

1) Complete and balance the following equation: NO2?(aq)+Al(s)?NH4+(aq)+AlO2?(aq)(basic solution) Express your answer as a net chemical equation includingphases. 2) Complete and balance the following equation: H2O2(aq)+ClO2(aq)?ClO2?(aq)+O2(g)(basic solution) Express your answer as a net chemical equation includingphases.

1. In photosynthesis, plants form glucose (C6H12O6) and oxygenfrom carbon dioxide and water. a). Calculate ? H ?rxn at15 ? C. b). Calculate ? S ?rxn at15 ? C. c). Calculate ? G ?rxn at15 ? C. 2. Consider the following reaction: 2NO( g )+O2( g )?2NO2( g ) Estimate ? G ? for this reaction at each of thefollowing temperatures and predict whether or

1. At the freezing point of water(0?C), K w=1.210?15. Calculate [H+] and [OH?] fora neutral solution at thistemperature. [H+], [OH?] = ?? 2. Which solution below has the highest concentration ofhydroxide ions? pH = 6.0 pH = 7.6 pH = 4.5 pH = 9.2 pH = 12.4 3. Which solution below has the highest concentration ofhydronium ions? pH = 6.5 pH = 13.5 pH

1. Identify each pair of compounds as constitutional isomers,stereoisomers, identical molecules, or other.

(a) (b) (c) (d) stereoisomers constitutional isomers other identical molecules identical molecules other stereoisomers constitutional isomers constitutional isomers identical molecules stereoisomers other other identical molecules constitutional isomers stereoisomers CH3 H301111 CH3 CH3 H3C Q CH3 CH3 CH3 Map

1. What is the name of the molecule shown below A. 2methyl5heptanol B. (S)6methyl3heptanol C. (R)2methylheptanol D. (R)6methyl3heptanol OH

1. Identify the major and minor resonance contributor(s) for the azide anion, N3?. major contributor(s): A.B.C.D.E. minor contributor(s): A.B.C.D.E. 2. Identify the major and minor resonance contributor(s) for the formate anion, HCO2?. major contributor(s): A.B.C.D. minor contributor(s): A.B.C.D.

A. N2 C. E. N N N N N N N N B. N D. N N N N2 N2

1.) During the process of diluting a solution to a lowerconcentration A- the amount of solvent does notchange B- the amount of solute doesn't change C- the volume of the solution does notchange D- water is removed from the concentratedsolution E- there is more solute in the concentratedsolution

1.How many hydrogens are attached to each of the indicated carbons in morphine 2. Draw all the stagered and eclipsed conformers that result from rotation about the c2-c3 bond of pentane

How many hydrogens are attached to each of the indicated carbons in morphine HO N OH morphine Draw all the staggered and eclipsed conformers that result from rotation about the C2C3 bond of pentane.

1)How many geometric isomers are there for each species? Part A [Fe(CO)4Cl2] Part B [Pt(NH3)2Cl2Br2]+ 2) Which of the following complex ions absorbs light of the longestwavelength? Which of the following complex ions absorbs light of the longestwavelength? [Cr(NH3)6] 3+ [Cr(NO2)6] 3- [Cr(en)3] 3+ [CrCl6] 3- [Cr(CN)6] 3- 3) What type of geometry

1.which of the following is correctly identified? a) H2CO3, strong acid b) NH3, strong acid c) NaOH, strong base d) HCI, weak acid e) Ca(OH)2, weak base 2. all of the following substances can function both as Bronsted acids and bases except: HPO4 2-, PO4 3-, and H2O ?

1.What are the different ways to represent compounds? Check all that apply. 1.a ball and stick model 2.a molecular formula 3.a cylindric model 4.a ball model 5.the Kolbe formula 6.a space-filling model 7.an empirical formula 8.a structural formula

1. HSO 4 ? is the conjugate _____of H 2 SO 4 and the conjugate _____of SO 4 2? acid / acid acid / base base / acid base / base 2. If [H 3 O + ] in an aqueous solution is 7.6 10 -9 M, what is the concentration of[OH - ]? Hint: [H 3 O + ][OH - ] = 1 x 10 -14 7.6 10 -23 M. 6.4 10 -5 M. 1.3 10 +8 M. 7.6 10 -9 M. 1.3 10 -6 M. 3. Which of the

Prove the dissociation PH of sodium phosphate.

1) Draw the alcohol that is the product of the reduction of 3-methylpentanal. 2) Draw the compound that would produce 4-ethyl-3-hexanol in the presence of a nickel catalyst and hydrogen 3) In the following reaction, a primary alcohol is fully oxidized to a carboxylic acid. Draw the aldehyde intermediate that was formed.

1) Which if the following liquids would make a good solvent foriodine, I 2 ? And why? a) HCL b) H 2 O c)CH 3 OH d) NH 3 e)CS 2 2) Dr. Himes cut his finger on a nail and got sepsis meaning aninfection began at the sight of the cute and traveled up his armgoing to his heart. He had to go to the ER where they gave this 75Kg professor 25 mg per Kg of

1. Rank the following molecules below by the numberof ATP molecules they produce, highest tolowest. Pyruvate NADH FADH2 Acetyl CoA GTP 2. Draw the condensed structural formula for a mixedtriacylglycerol that contains two palmitic acid molecules and one oleic acid molecule on the second carbon(center carbon) of glycerol. 3. Write an equation forthe

At ouupies pressure 10c 25C 600mh and at and 160 mm volume. what a pressure, a will be its height where temperature is of gas volume gas the is 640mh

1. Indicate whether F3CCN is linear, planar, orneither. linear planar neither linear nor planar 2. Propose a hybridization scheme for the left-handatom C. s p s p 2 s p 3 3.Propose a hybridization scheme for the right-handatom C. s p s p 2 s p 3

Which of the following best describes the allocation of service department costs using the direct method? a. All service department costs are allocated directly to the production departments, and some of these costs are then allocated to other service departments b. All service department costs are allocated directly to the production departments,

2)

1. Give IUPAC names to the following structures. OCH3 2 Br 3Bromoanis ole 1ethoxy2cyclopentene 08 5ethoxy1cyclopentene OCH3 dad nonEIgnoriq2 H Cyclohex3en1one3methoxybutanol OH 2 3 1ethoxy2propanol Cyclopentanal

1. Why must Gringard reactions be anhydrous? A. The water will protonate the Grignard reagent B. The water will perform a nucelophilic substitution with the product of the reaction C. The water will deprotonate the Grignard reagent D. The water will perform an electrophilic addition with the product of the reaction 2. When performing a Grignard

Mg Ether

1) Draw the acetal produced when ethanol adds to ethanal. 2) Draw the major organic product formed when 2-butanone undergoes a reaction with NaBH 4 . 3) Predict the organic product formed when heptan-3-one undergoes reaction with LiAlH 4 . 4) Reduction of 1-phenylpropan-1-one using NH2NH2 and HO-, heat: Draw the structure of the product formed

1. Which of the following statements is incorrect about benzene A) All of the carbon atoms are sp hybridized. B) It has delocalized electrons. C) The carboncarbon bond lengths are all the same. D) The carbonhydrogen bond lengths are all the same. E) All twelve atoms lie in the same plane. 2. The delocalized system in benzene is formed by a cyclic

PCC in CHCl H3PO4, A 1) PhCO3H in CHCl2 2) CH3ONA in CH3OH O3 in CHCl2 PhLi in EtO HO2NaOH NaBH4 in EtOH BH6 in THF Ph

1. Predict the products of the following reactions. (2 points be box) or ho 2. LAIH 3. HO HO NH Br 1. NaOH 2. Mel si 1. NaCN 2. EtMgBr 3. HO ih NH D 2 equiv. HO 1. DIBALH 2. HO 1. PhMgBr (excess 2 HO F 2 fragments,2. Draw a mechanism for the following reaction. (5 points) Me 1. MeMg Br 2. HCI, HO 3. Synthesize the following using an ester and

1. Give the structures of the two major products in the following reaction. 2. Draw the major organic product of the following Friedel?Crafts alkylation. (An excess of benzene is present.) 3. Draw the structure of the major nitration product from the reaction of nitric acid with 1,3-dimethylbenzene. Show all formal charges.

CI Br2 FeBr3

2) What is the pH of pure water at 40.0C if the Kw at this temperature is 2.92 x 1014 A) 8.446 B) 6.767 C) 7.000 D) 7.233 3) A solution with a hydrogen ion concentration of 3.25 x 106 M is. ion concentration of A) basic, 3.08 x 108 M C) acidic, 3.08 109 M B) acidic, 3.08 108 M D) basic, 3.08 x 109 M 4) A solution with a hydroxide ion concentration

Rank these three hydrocarbons from weakest to strongest CC bond. Items (3 images) (Drag and drop into the appropriate area) Ethyne (C2H2) Ethene (C2H4) Ethane (C2H6) Items in order

Draw the diene and dienophile that are needed to prepare the following DielsAlder product. Diene Dienophile draw structure...

1) Refer to the posted IR spectra of pure dibenzalacetone andidentify the C=O and C=C stretching bands of dibenzalacetone (givethe frequencies) 2) An IR spectrum of a student dibenzalacetone product will beposted, compare it to the pure dibenzalacetone, acetone andbenzaldehyde spectra and comment on (i) whether it shows product (ii) whether it is

2.5 2.6 2.7 2.8 2.9 3 100 90 80 70 60 50 40 30 20 10 0 4000 A N S T C 3800 3600 3400 Pure DBA 3.5 4.5 3200 3000 2800 2600 2400 2200 5 2000 5.5 1800 MICRONS 6 1600 WAVENUMBERS 7 1400 8 9 10 1200 1000 11 12 800 13 14 15 NICOLET 20SX FTIR 16 17 18 19 21 22 0.0 600 ABSORBANUE C .05 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 2.0 450

1)Identify the oxidizing agent and the reducing agent forBa(s)+Cl2(g)BaCl2(s) . Express your answers as chemical formulas separated by acomma. oxidizing agent, reducing agent_______. 2)Identify the oxidizing agent and the reducing agent forAl(s)+3Ag+(aq)Al3+(aq)+3Ag(s) . Express your answers as chemical formulas separated by acomma oxidizing

13) Use the standard reaction enthalpies given below to determine AHrxn for the following reaction 4PC15(s) P4(g) 10 Cl2(g) AHrxn Given PC15(s) PC13(g) Cl2(g) AHrxn 157 kJ and P4(g) 6 Cl2(g) 1207 kJ AH rxn 4 PC13(g)

10. Propose the shortest synthetic route for the following transformation. OH 1 HBr 2 HBr, HOOH 3 Br 4 HSO4 5 HSO4, HO, HgSO4 6 OsO4, NMO 7 1) RCOH, 2) H3O 8 ethene OH 9 xs NaNH,NH3 10 HPt 11 HWilkinsons Catalyst 12 HLindlars Catalyst 13 NaNH3 14 1) 03 2) HO 15 CH3CHCI a. 9, 15, 9, 15, 12, 6 b. 9, 15, 9, 15, 12, 7 c. 9, 15, 9, 15,

Which 1 solution would have the highest vapor pressure at agiven temperature? Li2SO4 C6H12O6 NaC2H3O2 KCl

11. Name the following compound Br I CH3CHCHCCCH3 (Points 1) 5bromo2hexyne bromo4hexyne 1bromo1methyl3pentyne none of these are correct,9. A major source of aromatic compounds is (Points 1) coal tar plants animals soils SOC,4. A portion of the structure of Acrilan is shown. What is the structure of the monomer CN CN CN CH CHCHCHCH CHCHCH (Points

1. If you had used toluene instead of methyl benzoate in this reaction, what nitration product(s) would have formed Write a stepwise mechanism for the nitration reaction of toluene. 2. What does SDS stand for 3. What are some of the physical hazards of methanol (to be used during the recrystallization of methyl 3nitrobenzoate) as indicated in its

1) Given the following balanced equation, determine the rate of reaction with respect to H2. N2(g) 3 H2(g) 2 NH3(g) 2) Write a balanced reaction for which the following rate relationships are true. 1 AN205 1 ANO2 02 2 At 4 At At Rate 3) Given the rate law for reaction below NO(g) 03 (g) NO2(g) O2(g) Rate KNO03 What is the order with

15. If the compound in brevious question has a molar mass of 156 gmol, what is its molecular formula The answer is 16. After balancing the following chemical equation, what is the balancing coefficients of KCIO3 and O2 respectivey The answer is 17. 1.056 g of a metal carbonate MCO3(s), containing an unknown metal M, were heated to give the metal

1) Draw the other significant resonance contributor for the following compound include lone pairs of electrons, formal charges, and hydrogen atoms. 2) Add curved arrows to both structures to show the delocalization of electron pairs. H3C N

2) How many moles of Al2(SO4)3 can form under theseconditions? 3) How many moles of the excess reactant remain after thecompletion of the reaction?

Course Home Review Constants Periodic Table Correct Sulfuric acid is the limiting reactant, and aluminum hydroxide is the excess reactant. Therefore, all calculations that determine yield, including stoichiometric conversions, will be based on the initial amount of aluminum hydroxide.

1. Water and toluene are not miscible. Which of the following ismost likely the formula of toluene? CH3COOH C6H12O6 CH3OH C6H5CH3 2. Which of the following will be the most soluble inwater? CH3CH2CH2CH2CH2OH CH3CH2CH2OH CH3CH2CH2CH2CH2CH2OH CH3CH2CH2CH2OH 3. A water solution of sodium chloride is a good conductorof electricity. Due to this

3) Part A Identify the nuclide produced when uranium-238 decaysby alpha emission: 238 92U?42He + ?Express your answer as anisotope using prescripts. B) Identify the nuclide produced when carbon-14 decays by betaemission: 14 6C? 0?1e + ? Express your answer as an isotope usingprescripts. C)Identify the nuclide produced when fluorine-18 decays

1) Predict the organicproduct formed when BzCl reacts with cyclohexanol. BzCl = benzoylchloride. 2) Provide the majororganic product of the reaction below. 3) Draw the structureof the product formed when the compound shown below undergoes areaction with aq. NaOH and then is treated with aqueous acid.

CH3CHOH H (cat.)

1. Rank the following acids from weakest to strongest acids: A) HFO 2 , HClO 2 , HBrO 2 ,HIO 2 B) HIO, HIO 2 , HIO 3 ,HIO 4 C) The following acids are dissolved in a nonaqueous solventsuch as acetone: HF, HCl, HBr, HI ---------------------------------------------------------------------------------------------------------------------- 2. What is

2. Which statement below does NOT follow the Bohr Model (2 pts) A) When energy is absorbed by atoms, the electrons are promoted to higherenergy orhits. B) When an atom emits light, electrons fall from a higher orbit into a lower orbit. C) The energy emitted from a relaxing electron can have any wavelength. E) none of the above 3) Each of the

1. How many grams of pure, solid NaOH are required to make 400 mL of 0.1M NaOH solution 2. How many grams of a solution that is 50 by weight NaOH is required to make 400 mL of 0.1M NaOH solution 3. The density of a 50 solution of NaOH is 1.525 gmL. What volume of a solution that is 50 by weight NaOH is required to make 300 mL of 0.1M NaOH solution

Testbank, Question 155 Provide a curved arrow mechanism for the following reaction. HC 22 OH Your answer is incorrect. Try again. Draw step 1. Include lone pairs and formal charges in your answer. Enter your answer in form ABCD. Do not include stereochemistry in your answer. HC OH 19 HCI Edit 8 Get help answering Molecular,signment ES HC MHEUT

A solution of benzene (CH) and toluene (C7Hs) is 29.0 benzene by mass. At 25C the vapor pressures of pure benzene and pure toluene are 94.2 and 28.4 torr, respectively. Why is the composition of the vapor different from the composition of the solution O O O The vapor will be richer in the less volatile component. The vapor will be richer in the